522647457912 has 128 divisors (see below), whose sum is σ = 1472465275200. Its totient is φ = 173890644480.

The previous prime is 522647457901. The next prime is 522647457919. The reversal of 522647457912 is 219754746225.

It is a happy number.

522647457912 is a `hidden beast` number, since 5 + 2 + 2 + 64 + 7 + 4 + 579 + 1 + 2 = 666.

It is a super-2 number, since 2×522647457912² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (522647457919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9437728 + ... + 9492944.

Almost surely, 2^522647457912 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 522647457912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (736232637600).

522647457912 is an abundant number, since it is smaller than the sum of its proper divisors (949817817288).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

522647457912 is an equidigital number, since it uses as much as digits as its factorization.

522647457912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55785 (or 55763 counting only the distinct ones).

The product of its digits is 8467200, while the sum is 54.

The spelling of 522647457912 in words is "five hundred twenty-two billion, six hundred forty-seven million, four hundred fifty-seven thousand, nine hundred twelve".